• Heavy torsion bar links the two hydraulic lift cylinders to equalize the load, eliminate twisting of the carriage and relieve stress on the guides, columns and carriage.
• Dual, spring-loaded safety cams provide added protection against uncontrolled descent.
• Hydraulic lift mechanism uses heavy-duty roller chain instead of cable for added quality, strength and durability - up to 10 times longer life.
• Other safety features include 8 ft. high mesh enclosures, safety gates at each level, safety chains and railings, overtravel protection, backstop panels and remote, heavy-duty control stations. All gates are electrically and mechanically interlocked with carriage movement and lift operation.

• Hydraulic Vertical Conveyors provide reliable, economical vertical lifting for mezzanines, balconies and other two-level applications. ACG can provide you with a heavy-duty hydraulic VRC with advanced safety technology and proven reliability. These lifts are available with straddle or cantilever carriages.
• Hydraulically lifts loads to 6,000 lbs with carriage sizes to 10 ft. x 10 ft. vertical rise to 22 ft., travel speeds from 25 fpm to 35 fpm.
• Features guide columns that are heavier than other vertical lifts on the market and oversized bearings with a life expectancy of over 20 years - to assure long term operation.

Series 21 Specifications

GENERAL
Pflow Series 21 Vertical Lifts move materials between two levels. Principal components are guide columns, carriage and hydraulic actuating mechanism.

APPLICATION DATA
Pflow Series 21 Vertical Lifts are available with: Lifting capacities to 6,000 lbs.; carriage sizes to 10' x 10'; vertical rise to 22'. Standard travel speed is 24 fpm. Speeds to 35 fpm are available on special order.

STRUCTURE
Guide columns are 6" wide flange. Carriage is fabricated of 4" or 6" structural members with steel deck plate. Other deck surfaces can be supplied. Carriage is available in straddle or cantilever styles.

OPERATION
Carriage is lifted and lowered by two hydraulic cylinders mounted on guide columns. Cylinders are actuated by a remote mounted hydraulic pump. Transmission of the lifting force is through roller chain attached to the cylinders and carriage. A torsion bar links the two cylinders to equalize the load and ensure carriage remains level at all times.

ELECTRICAL
Standard power requirements are 208V/230V/460V, 3-phase. Single-phase is an available option. Control voltage is 24V. Control stations and remote mounted control panel are NEMA 12. Control stations, provided for each level, include self-maintaining push buttons with mushroom-head E-Stop button.

SAFETY FEATURES
Overtravel is prevented by positive mechanical stops. Safety cams prevent uncontrolled descent in case both chains break. Velocity fuses prevent uncontrolled descent in case of hydraulic hose rupture. NO RIDER signs are posted at each point of operation. Optional DeckLocks automatically lock carriage at the upper level to eliminate drift or bounce. Carriage will not move if loaded to more than 120% of rated capacity.

CARRIAGE SIDE GUARDS
Carriage is equipped with safety rails on non-operating sides and safety chains or diagonal drop bars on operating ends. Optional expanded metal or sheet metal carriage side guards are available.

SAFETY ENCLOSURES
Safety codes (ANSI/ASME B20.1) require gates and enclosures on all sides of the lift. Enclosures must be a minimum of 8' high and reject a ball 2" in diameter. Pflow manufactures gates and enclosures with 1/2" expanded metal in a structural angle frame. Gates are accessible during loading/unloading and are electrically and mechanically interlocked with carriage movement. Interlocks prevent gates from being opened unless the carriage is at the designated level and also prevent carriage movement if any gates are not fully closed and locked.